Humans are Bronx Zoo's newest treetop primates

Emma Gelman slides down the zip line on a horseback saddle in the Bronx Zoo's Treetop Adventure.

Julius Constantine Motal

Staff members with the Bronx Zoo's Treetop Adventure help new explorers put on their safety gear.

Julius Constantine Motal

Kakra Conduah, a ranger with the Bronx Zoo's Treetop Adventure, explains the zip line to the O'Ferrall family.

Julius Constantine Motal

Declan O'Ferrall glides down the practice zip line in the Bronx Zoo's Treetop Adventure.

Julius Constantine Motal

Inga Reznik walks across a bridge in the Bronx Zoo's Treetop Adventure.

Julius Constantine Motal

Inga Reznik, right, watches her daughter Emma prepare to slide down the final zip ine.

Julius Constantine Motal

Emma Gelman slides down the zip line in the Bronx Zoo's Treetop Adventure.

Julius Constantine Motal

The Bronx Zoo is home to a diverse selection of wildlife. But in the last few months, it has also become home to a set of obstacle courses. Its newest attraction, Treetop Adventure, offers would-be explorers the chance to traverse a set of climbing courses and zip lines built into the zoo's natural landscape.

The climbing portion of Treetop Adventure offers seven courses at different skill levels indiated by color: yellow for beginner, green for intermediate, blue for advanced and black for expert. A zip line gives zoo-goers the chance to fly over the Bronx River. There are, unfortunately, no animals – other than Homo sapiens – on the course.

Have a look up the narrow pathway connecting Arlington Avenue and Kappock Street in Spuyten Duyvil and one might see a steep trail of hideous, uneven pavement snaking between warped side rails bent out of shape. It’s like something out of a Gothic fairy tale.